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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi All, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a ticket open with Digium, but based on their
previous lack of support for the Asterisk Appliance, I’m not really holding
my breath – and, honestly, I’m not 100% convinced it’s a
Digium issue in the first place (but I don’t know where else to point
fingers). <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We have an AEX-804E (PCI Express, 4 FXO ports, Hardware Echo
Cancellation) in a Dell PowerEdge 1950 with four straight analog telephone
lines, and running asterisk 1.4.22. All of the local phones are Cisco 7961G
with the SIP firmware. Calls between SIP sets, across our SIP trunk on a VPN to
a remote office, or calls to or from the remote office’s PSTN lines (over
the aforementioned SIP trunk) are all fine. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>On many [but not all] calls to or from the PSTN, I’m
getting two complaints – <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#1 is low receive (i.e. from the PSTN) volume<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>#2 (which seems to get significantly worse if I try tweaking
bumping up the tx/rx gain in Zapata.conf) is that if the person in our office
is talking all inbound audio is muted, but not the other way around (i.e. half
duplex, but not half duplex both directions if that makes any sense) <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Further compromising my sanity is that #1 seems hard for me to
duplicate – calls to or from my cell phone, for example, always sound
fine. Local calls are “mostly” fine, and long distance calls are
hit-or-miss, calls to a Hawaiian (how’s that for “Long Distance”
from Ohio) 1004 Hz test number are fine – in fact, subjectively, borderline
too loud which makes no sense since before going live with Asterisk, we had a
legacy Panasonic KSU/PBX on the same lines – on the same punchdown blocks
– and no one ever complained about these issues. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If I turn off the echo canceller there’s a modest (may
even just be psychological) improvement in line gain, but the echo is so horrendous
(actually the echo sounds louder than the inbound call volume) as to make
things unusable. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any ideas? At all? I’m still relatively new to the
Asterisk-interconnected-to-PSTN side of things, and it seems like there are
dozens of config files and tools so explicit instructions are appreciated!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks in advance, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><st1:PersonName
w:st="on"><font size=2 face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Lincoln</span></font></st1:PersonName></st1:place></st1:City><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-- <br>
<st1:place w:st="on"><st1:PersonName w:st="on"><st1:City w:st="on">Lincoln</st1:City></st1:PersonName></st1:place>
King-Cliby, CTS<br>
Applications Engineer<br>
ControlWorks Consulting, LLC<br>
V: 440-729-4640 x1107 F: 440-729-0884 I: <a
href="http://www.thecontrolworks.com/">http://www.thecontrolworks.com/</a> <br>
Crestron Authorized Independent Programmer</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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